ABSTRACT
One of the most powerful and fascinating metaphors, which have so far appeared in the economic literature, on how communication can coordinate actions is certainly the one given by the Electronic Mail Game (EMG), originally proposed by Rubinstein (1989). The model can be considered a game theoretic counterpart of a coordination problem first identified within the artificial intelligence and computer science communities by Gray (1978) and made known, among others, by Halpern (1986) and Halpern–Moses (1990).
